Device for removing gear-wheels, &amp;c.



e. w. SCHILLING. DEVICE FOR REMOVING GEAR WHEELS, &c-. APPLICATION FILED DEC.2?. 1919- 1,36,76, Patented Feb. 15,1921' [me/hm!" SO/ LLZZ L79;

G. W. SCHILLING. DEVICE FOR REMOVING GEAR WHEELS &c.

APPLICATION FILED DEC. 27. [9!9.

Patentd Feb. 15, 1921.

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Wzfrzesses wag? G. W. SCHILLING.

DEVICE FOR REMOVING GEAR WHEELS; 6w.

APPLICATION FILED mac. 27. 1919.

Patented Fb, 15,1921

3 SHEETSSHEET 3- mverd'ar' ji v. 1

GEORGE W. SCHILLING, OF PHILADELPHIA, PENNSYLVANIA.

DEVICE FOR REMOVING GEAR-WHEELS, 8w.

Specification of Letters Patent.

Patented Feb. 15, 1921.

Application filed December 27, 1919. Serial No. 347,769.

T 0 all whom it may concern:

Be it known that I, GEORGE W. SCHIL- LING, a citizen ofthe United States, residing at Roxboro, Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and, useful Improvements in Devices for Removing Gear- Nheels, &c.,' of which the following is a specification.

One object of myinvention is to provide an improved device which can be quickly and easily operated, for removing gear wheels,pulleys, couplings, etc., from shafts.

Another object is to so construct the device of my present invention that it will be particularly well adapted for use on bench worl: and to include means whereby the parts can be easily and quickly adjusted with respect to the top of the bench to suit various requirements. 7

v A further object is to so construct the device of my invention that it will be operated to remove gears from shafts even though the gears are close up to a'bearing and will be also suitable for removing bevelgears and pinions. r

A still further object is to make my 111- vention' of a simple and durable construction and so that it can be easily and quickly made and manipulated. r

These objects, and other advantageous ends which will be described hereinafter, I attain in the following manner, reference being had to the aocompanyin drawings in which- 7 Figure 1 is a top plan view illustrating my invention as it appears when operating to remove a gear wheel from a shaft,

Fig. 2 is a front elevation of Fig; 1,

Fig. 3 is an end view of Fig. '2,

Fig. 4i is a fragmentary sectional elevational view takenon the line 1- 1 of Fig. 1,

Fig. 5 is a fragmentary sectional plan view taken on the line 5-5 of Fig. 2,

Fig; 6 is a perspective View of one of the elements of my invention,

Fig. 7 is a view of the same general character as Fig. 2 illustrating a modlfied form of certain of the parts of HIYlDVGDtlOD,

Fig. 8 is an end elevation showing a modified form of certain of the other parts of my invention,

a Fig. 9 isa sectional plan view taken on the line 99 of Fig. 8, and

Fig. 10 is an elevation, partly in section, showing another modification of certain of the parts adapted for use to remove a bevel gear.

Referring particularly to Figs. 1 to 6' inclusive, 11 represents a standard which is adapted to be secured to the top 12 of a workbench and this standard has holes 13 therein, one positioned above the other as clearly shown in Fig. 3. A pivot bolt 14 is adapted to be projected through any of the holes 13 and through one end of a bracket 15 so that said bracket is pivotally tapped hole 17' in the opposite end of the bracket 15 and the lower end of the adjusting screw engages the bench top'12. A hand-wheel 18 is secured to the upper end of the adjusting screw so that by turning the hand-wheel, the bracket 15 can be raised and lowered on the bolt 1 1 as a pivot. A comparatively heavy metallic head 19 has feet 20 which are secured to the upper surface of the bracket 15 by bolts 21. This head 19 has a substantially central tapped hole 22 through which extends a screw threaded plunger 23. One end of the screw threaded plunger is made angular for engagement with a wrench and the other end of said plunger has a pointed centering portion 25 which is adapted to engage. within the centering recess in the end of a shaft. lCwo bolts 26 and 27 extend freely through the head 19 at positions above and below the screw threaded plunger 23. Nuts 28 and 29 are respectively screwed on the threaded ends of the bolts 26 and 27 so as to engage the surface 30 of the head 19.

A puller block 31 is-niade in two sections 32 and 33. Spacing nuts 34 and 35 are positioned between the sections .32 and 33 in line with the respective bolts 26 and 27 said bolts having threaded portions for engagement within the tapped cavities 36 in the spacing nuts 34 and 35. Clamping bolts 37 and 38 extend through the sections 32 and 33 andthrough the respective spacing nuts 34 and 35. Each of the sections 32 and 33 has a substantially V-shape recess 39 and a flange 40 of the same general shape as cle, such for example'as. the gear wheel 41 which is to be withdrawn from a shaft 42. The flanges 40 which project inwardly from the recesses position themselves against the surface 41 of the gear wheel which is opposite theend 43 of the shaft, and the pointed 1ng .vh 1 I 1 1 b 1 l I ie ia've cescri ec my invention, as

portion of the screw threaded plunger is adapted to engage within the recess in the end 43 of the shaft 42.

By the construction and arrangement of parts as above described, the nuts 28 and 29 can be turned so as to properly move the puller block 31 in the position so that the flanges bear evenly upon the surface 4P; itbeing noted that the'spacing nuts 34 and 35 by being connected tothe pullerblock by the bolts 37 and 38 permit of a slight pivotal movement so as to allow for any variation or irregularities of the gear Wheel. The screw threaded plunger 23 can then be rotated so as to push the shaft though the gear, permitting the latter to remain be tween thepuller block sections; or if desired the nuts 28 and 29 can be rotated to move the puller block 31 toward the head 19and in so doing will pull the gear wheel 41 or other device from the shaft.

In the form of my invention shown in Fig. '7, the construction is substantially similar with exception that instead of using the nuts 28 and 29 on screw threaded portions of the bolts 26 and 27, said bolts 26 and 27 have aseries of holes 44 and are connected tothe head 19 by cotter pins 45; thus per-,

1 mitting the puller block 31 to be positioned 10, the recesses 48 are made of such at various distances from the head 19.

' in Figs. 8 and 9 I have shown a modification of the puller block in which the recesses 46 of the sections 32 and 33 are made arouateand provided with serrations or teeth 47 which when the bolts '37 and 38 are'tightcued will bite into the teeth of the gear wheel, as shown in Fig. 9, and with this construction'flanges such as the flanges 40 above described are'not necessary.v

In the form of puller block shown in Fig. shape as toernbrace a bevel gear pinion and the flanges 49 are adapted to engage the surface 50 of the gear to permit its withdrawal from the shaft. r v 7 While I have described my invention spe' ciiically as adapted for removing gear wheels, it will be noted that it can be usedfor removing any articles which are jammed, keyed or otherwise secured to a shaft and in certain of the claims I have used the word wheel as matter of convenience. Hon

' ever, this term is meant to imply a gear, pulley, couplingor other article which is mounted on a shaft. p

I have also illustrated the head19 provided with hooked ends 51 and recesses 52 and 53 so that if desired I can use the same as the head structure which forms a part of my Patent No. 1,268,285 of-June 4,1918 and for this reason I have also shown thesections of thepuller block provided with holes 54' which register with the recesses 52 and 53, as clearly shown in Fig. 3 of the draW- taking a particular form, it will beunderstood that the variousfpartsof-my invention may be changed without departing from the spirit thereof, and hence I do notlimit my self to the precise construction set forth, but consider that I amat libertyto make such changes and alterationsas fairly come with in the scope of theappended claims.

Having thus described my invention, what I cla m as new and desire to secure by-Letters Patent is: T i f I 1. A device of the character described in? cluding a head; a screw threaded plunger in screw threaded engagement with "said head; a puller block made in sections, means for 7 moving the sections toward each other; and

means connecting said puller block with the head and spaced from said plunger said connecting means being ad ustable within their lengths whereby the. puller block can substantially as described.

2; A device of the characterdescribed inbe held at. various distances from said head;

eluding a head; a screw threadedplungerin screw threaded engagement with said head; a puller block made in sections; spacing members between said sections; clamping" bolts extending through said sections. and

said spacin members; and means adjustably connecting said spacing'members with the head; substantially as described. a 3. A device of the character described'in eluding a head; a screw threaded plunger in screw threaded engagement with said head; a puller block made in sectionsfbolts for moving said section's toward each other; and

n1eans connecting said head and puller holes through in screw threaded engagement withsaid.

cavities and secured-to said. head; substantially as described. Q

5. A device of the character described including a head: a screw threadedplunger-iin screw threaded engagement with said head;

a puller block made in sections; spacing In testimony. whereof I have signed my members between said sectlons and having name to thls speclfication in the presence of 10 screw threaded cavities and members in two subscribing witnesses.

screw threaded en zwement with said cavi- Y 1 ties and adjustabfy secured to said head; GEORGE SCHILLHAT' and clamping bolts extending through said Witnesses: sections and said spaclng members; substan- CHAS. E. Po'rrs, tially as described. ANNA BENTON. 

